Phase-transition radiation in vapor condensation process

Kuo Ting Wang, M. Quinn Brewster

Research output: Contribution to journalArticlepeer-review


Energy release by radiative relaxation during water vapor condensation is considered to be responsible for phase-transition radiation in the water vapor condensation process. A two-level transition model is proposed to explain the radiative transfer mechanism for condensation radiation of water vapor. The absorption coefficient due to condensation radiation and the associated optical properties are defined in the radiative transfer equation. The spectral profile of the source function of vapor condensation radiation is examined and agreement with the experimental characteristic wavelength of condensation radiation is found.

Original languageEnglish (US)
Pages (from-to)945-949
Number of pages5
JournalInternational Communications in Heat and Mass Transfer
Issue number8
StatePublished - Oct 2010


  • Condensation
  • Phase-transition radiation
  • Radiative transfer
  • Water vapor.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Chemical Engineering
  • Condensed Matter Physics


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